Salvatore Ippolito

Salvatore Ippolito was an Italian police informant who was sent to infiltrate Pietro Valpreda's anarchist "22 March Group" in Rome in 1969. He told the police that he was uncertain if Valpreda was behind the Piazza Fontana bombing, and that fellow group member Mario Merlino posed as an extreme leftist at meetings, but still saw right-wing people such as National Vanguard leader Stefano Delle Chiaie.